1 files changed, 58 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gv100/fb_gv100.c b/drivers/gpu/nvgpu/gv100/fb_gv100.c
new file mode 100644
index 00000000..a3785266
--- /dev/null
+++ b/drivers/gpu/nvgpu/gv100/fb_gv100.c
@@ -0,0 +1,58 @@
+/*
+ * GV100 FB
+ *
+ * Copyright (c) 2017, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include <nvgpu/types.h>
+
+#include <nvgpu/dma.h>
+#include <nvgpu/log.h>
+#include <nvgpu/enabled.h>
+#include <nvgpu/gmmu.h>
+
+#include "gk20a/gk20a.h"
+#include "gv11b/fb_gv11b.h"
+#include "gv100/fb_gv100.h"
+
+#include <nvgpu/hw/gv100/hw_fb_gv100.h>
+
+#define HW_SCRUB_TIMEOUT_DEFAULT        100 /* usec */
+#define HW_SCRUB_TIMEOUT_MAX            2000000 /* usec */
+
+static void gv100_fb_reset(struct gk20a *g)
+{
+        u32 val;
+        int retries = HW_SCRUB_TIMEOUT_MAX / HW_SCRUB_TIMEOUT_DEFAULT;
+
+        nvgpu_info(g, "reset gv100 fb");
+
+        /* wait for memory to be accessible */
+        do {
+                u32 w = gk20a_readl(g, fb_niso_scrub_status_r());
+                if (fb_niso_scrub_status_flag_v(w)) {
+                        nvgpu_info(g, "done");
+                        break;
+                }
+                nvgpu_udelay(HW_SCRUB_TIMEOUT_DEFAULT);
+        } while (--retries);
+
+        val = gk20a_readl(g, fb_mmu_priv_level_mask_r());
+        val &= ~fb_mmu_priv_level_mask_write_violation_m();
+        gk20a_writel(g, fb_mmu_priv_level_mask_r(), val);
+}
+
+void gv100_init_fb(struct gpu_ops *gops)
+{
+        gv11b_init_fb(gops);
+        gops->fb.reset = gv100_fb_reset;
+}